Refs https://bugs.chromium.org/p/chromium/issues/detail?id=510079
Closes #21120

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And move one Firefox entry to keep the entries sorted by browser.
Refs #21089

These would help in making hidden skip links show up visually once they
receive AT focus (for sighted/partially sighted AT users)

- Adds six new utils for vertical-align property
- Documents the additional classes in the utils docs

https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/8282613/ has been marked as Fixed.
Refs #20335.

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h/t @bardiharborow for opening https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/15944476
Refs #20143
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- Move and rename .img-rounded to .rounded, .img-circle to .rounded-circle
- Add new .rounded-{direction} utils
- New docs pages for border utils with TBD comments for the border property
- Removes most image examples for rounding from the content/images docs in favor of new docs page

Closes #20507

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https://bugzilla.mozilla.org/show_bug.cgi?id=504622
Refs #12359

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https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/6508895-dialog-element
Refs #20175

[ci skip]

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Refs https://bugzil.la/840640
Refs https://webkit.org/b/84635

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Refs https://bugzilla.mozilla.org/show_bug.cgi?id=1282363

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Refs http://caniuse.com/#feat=css-nth-child-of
Refs https://drafts.csswg.org/selectors-4/#the-nth-child-pseudo
Refs https://crbug.com/304163
Refs https://bugzil.la/854148

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So remove its entry from the Wall.
Refs #20012, #20024
Refs http://trac.webkit.org/changeset/202324

[ci skip]

Add Wall of Browser Bugs entries for #12832

So remove its entry from the Wall of Browser Bugs
Refs #15832

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[skip validator]

Update Wall of Browser Bugs accordingly.
Refs #19670

[ci skip]

See https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7787318/
Refs #19670

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Refs https://developer.mozilla.org/en-US/docs/Web/CSS/:dir
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See https://bugzil.la/1278000
Refs #19670

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See https://bugzilla.mozilla.org/show_bug.cgi?id=1277782
Refs #19839

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See https://webkit.org/b/158342
Refs #17695.

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Refs https://webkit.org/b/158340
Closes #20012

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Refs https://crbug.com/597642
Closes #19810

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Refs https://webkit.org/b/158276
Closes #19927

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Remove its entry from the Wall of Browser Bugs
Refs #16372

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Remove its entry from the Wall of Browser Bugs.

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